<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>姓名案例_计算属性实现</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    	<!-- 准备好一个容器-->
		<div id="root">
			姓：<input type="text" v-model="firstName"> <br/><br/>
			名：<input type="text" v-model="lastName"> <br/><br/>
			全名：<span>{{fullName}}</span> <br/><br/>
		</div>


        <script type="text/javascript">

             const vm = new Vue({
                el:'#root',
                data:{
                    firstName:'张',
                    lastName:'三',
                },
                computed:{

                    fullName(){
                        console.log("get被调用了")
                        return this.firstName+'-'+this.lastName
                    }
                }

             })

        </script>
</body>
</html>